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प्रश्न
Define the term principal focus in case of convex mirror. Draw a convex mirror and show its principal focus and focal length clearly.
उत्तर
Focal length is the distance between pole (P) and focus (F)
(F) Focus is a point on principal axis where rays of light appear to meet.
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संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Centre of curvature
What is the name of the phenomenon in which the right side of an object appears to be the left side of the image in a plane mirror?
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Name the spherical mirror which (i) diverges (ii) converges the beam of light incident on it. Justify your answer by drawing a ray diagram in each case.
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
Why does a driver use a convex mirror instead of a plane mirror as a rear view mirror?
Illustrate your answer with the help of a ray diagram.
(a) When a concave mirror is used as a shaving mirror, where is the person's face in relation to the focus of mirror?
(b) State three characteristics of the image seen in part (a).
Define the following term in relation to concave mirror.
Principal focus
Define the radius of curvature.
